CO2 has a timescale in the atmosphere. Everything does. Pretty fortunate, really.
Some methane will be broken down by the activity of free radicals. But while oxidation by the hydroxyl radical is the main sink, it's not the only one. Methane is also taken up by soils.
When you're talking about timescales of effect as a greenhouse gas, I wouldn't have thought the method of removal from the atmospheric reservoir was of major concern.
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timeasmymeasure
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Date: 2008-09-25 11:26 am (UTC)Some methane will be broken down by the activity of free radicals. But while oxidation by the hydroxyl radical is the main sink, it's not the only one. Methane is also taken up by soils.
When you're talking about timescales of effect as a greenhouse gas, I wouldn't have thought the method of removal from the atmospheric reservoir was of major concern.